feat: wip attach attachments to resource models

packages/server/src/services/Attachments/events/AttachmentsOnCreditNote.ts

@@ -0,0 +1,153 @@
+import { Inject, Service } from 'typedi';
+import { isEmpty } from 'lodash';
+import {
+  ICreditNoteCreatedPayload,
+  ICreditNoteCreatingPayload,
+  ICreditNoteDeletingPayload,
+  ICreditNoteEditedPayload,
+} from '@/interfaces';
+import events from '@/subscribers/events';
+import { LinkAttachment } from '../LinkAttachment';
+import { ValidateAttachments } from '../ValidateAttachments';
+import { UnlinkAttachment } from '../UnlinkAttachment';
+
+@Service()
+export class AttachmentsOnCreditNote {
+  @Inject()
+  private linkAttachmentService: LinkAttachment;
+
+  @Inject()
+  private unlinkAttachmentService: UnlinkAttachment;
+
+  @Inject()
+  private validateDocuments: ValidateAttachments;
+
+  /**
+   * Constructor method.
+   */
+  public attach(bus) {
+    bus.subscribe(
+      events.creditNote.onCreating,
+      this.validateAttachmentsOnCreditNoteCreate.bind(this)
+    );
+    bus.subscribe(
+      events.creditNote.onCreated,
+      this.handleAttachmentsOnCreditNoteCreated.bind(this)
+    );
+    bus.subscribe(
+      events.creditNote.onEdited,
+      this.handleUnlinkUnpresentedKeysOnCreditNoteEdited.bind(this)
+    );
+    bus.subscribe(
+      events.creditNote.onEdited,
+      this.handleLinkPresentedKeysOnCreditNoteEdited.bind(this)
+    );
+    bus.subscribe(
+      events.creditNote.onDeleting,
+      this.handleUnlinkAttachmentsOnCreditNoteDeleted.bind(this)
+    );
+  }
+
+  /**
+   * Validates the attachment keys on creating credit note.
+   * @param {ICreditNoteCreatingPayload}
+   * @returns {Promise<void>}
+   */
+  private async validateAttachmentsOnCreditNoteCreate({
+    creditNoteDTO,
+    tenantId,
+  }: ICreditNoteCreatingPayload): Promise<void> {
+    if (isEmpty(creditNoteDTO.attachments)) {
+      return;
+    }
+    const documentKeys = creditNoteDTO?.attachments?.map((a) => a.key);
+
+    await this.validateDocuments.validate(tenantId, documentKeys);
+  }
+
+  /**
+   * Handles linking the attachments of the created credit note.
+   * @param {ICreditNoteCreatedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleAttachmentsOnCreditNoteCreated({
+    tenantId,
+    creditNote,
+    creditNoteDTO,
+    trx,
+  }: ICreditNoteCreatedPayload): Promise<void> {
+    if (isEmpty(creditNoteDTO.attachments)) return;
+
+    const keys = creditNoteDTO.attachments?.map((attachment) => attachment.key);
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'CreditNote',
+      creditNote.id,
+      trx
+    );
+  }
+
+  /**
+   * Handles unlinking all the unpresented keys of the edited credit note.
+   * @param {ICreditNoteEditedPayload}
+   */
+  private async handleUnlinkUnpresentedKeysOnCreditNoteEdited({
+    tenantId,
+    creditNoteEditDTO,
+    oldCreditNote,
+  }: ICreditNoteEditedPayload) {
+    const keys = creditNoteEditDTO.attachments?.map(
+      (attachment) => attachment.key
+    );
+    await this.unlinkAttachmentService.unlinkUnpresentedKeys(
+      tenantId,
+      keys,
+      'CreditNote',
+      oldCreditNote.id
+    );
+  }
+
+  /**
+   * Handles linking all the presented keys of the edited credit note.
+   * @param {ICreditNoteEditedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleLinkPresentedKeysOnCreditNoteEdited({
+    tenantId,
+    creditNoteEditDTO,
+    oldCreditNote,
+    trx,
+  }: ICreditNoteEditedPayload) {
+    if (isEmpty(creditNoteEditDTO.attachments)) return;
+
+    const keys = creditNoteEditDTO.attachments?.map(
+      (attachment) => attachment.key
+    );
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'CreditNote',
+      oldCreditNote.id,
+      trx
+    );
+  }
+
+  /**
+   * Unlink all attachments once the credit note deleted.
+   * @param {ICreditNoteDeletingPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleUnlinkAttachmentsOnCreditNoteDeleted({
+    tenantId,
+    oldCreditNote,
+    trx,
+  }: ICreditNoteDeletingPayload) {
+    await this.unlinkAttachmentService.unlinkAllModelKeys(
+      tenantId,
+      'CreditNote',
+      oldCreditNote.id,
+      trx
+    );
+  }
+}